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Sliven Valley

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Sliven Valley ( Bulgarian : Сливенска котловина ) is situated in eastern central Bulgaria . It is named after the city of Sliven , its main settlement. It is the ninth of the eleven Sub-Balkan valleys in direction west–east and is the second largest of them, after the Sofia Valley .

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57-794: The valley is enclosed between the Balkan Mountains to the north and the Sredna Gora mountain range and the heights of Bakadzhitsite and Hisar to the south. The Shivachevski Ridge separates it from the higher Tvarditsa Valley to the west, while the Terzijski Ridge of the Balkan Mountains and the Hisar Heights form the divide with the Karnobat Valley to the northeast. The northern slopes are part of Sinite Kamani Nature Park . It spans

114-471: A 21.2 km section of the first class I-7 road Silistra – Shumen – Yambol – Lesovo . In the central parts of the valley in direction northwest–southeast is a 18 km section of the second class II-53 road Polikraishte –Sliven–Yambol– Sredets . To the west in direction southwest–northeast between Sliven and Zlati Voyvoda runs a 14 km stretch of the second class II-66 road Sliven– Stara Zagora – Popovitsa . From north to south in its eastern reaches

171-636: A locally endemic winged bellflower ( Campanula calyciliata ) and Pančić's frog grass ( Senecio pancicii ), which can be found only on the mountain. There are also communities of mountainous sphagnum bogs on the localities of Jabučko Ravnište, Babin Zub and Arbinje. Some 350 herb species are considered medicinal or aromatic . In 2022, several independent surveys from various universities and institutes were conducted, in order to list all of them, to enhance their protection, and to check possibilities for potential plantation production. Vast areas south and southeast from

228-453: A much smaller scale. The 500 metres (1,600 ft) long gorge is a remnant of the former cave which eroded in time. Underground waters on the mountain reach the surface in the forms of common springs, well-springs ( vrelo ) and diffused springs ( pištevina ). There are some 500 springs with the flow of over 0.1 L/s (1.3 imp gal/min). The strongest spring is the intermittent Jelovičko vrelo , known for its fluctuations, characterized by

285-523: A territory of 830 km and is thus the second largest of the Sub-Balkan valley by area. It reaches a length of 70 km in direction west–east and is 15 km at its widest. The average altitude is 150 m and is inclined in southern direction. It is divided in two parts by the heights of Hamambair, the higher Sliven field to the west and the partially marshy Straldzha field to the east. Along its northern slopes there are many alluvial fans formed by

342-464: A young brown bear was filmed on camera. There are 203 species of birds, of which 154 are nesting in the park, 10 are wintering, 30 are passing and 13 are wandering. Important species include golden eagle , Ural owl and hawk . As the park is the most important habitat in Serbia for long-legged buzzard , Eurasian woodcock and an endemic Balkan horned lark , an area of 440 km (170 sq mi)

399-603: Is a salmonid region, inhabited by the riverine brown trout . Another 25 species of fish live in the rivers and streams, so as the fire salamander and newts . Over 30 mammalian species are found in the park, including lesser mole-rat , hazel dormouse and the Tertiary relict, European snow vole . Brown bear became extinct in Serbian part, but evidence showing the presence of the bears were found in 2014. The bears have been photographed in 2015, before disappearing again until 2019 when

456-532: Is a 15.8 km section of the third class III-707 road Petolachakata– Aleksandrovo – Golyamo Krushevo . A section of railway line No. 3 Iliyantsi (Sofia)–Karlovo– Sliven – Karnobat – Varna served by the Bulgarian State Railways crosses the valley in direction west–east between the railway stations of Binkos and Tserkovski. The valley is also traversed by a section of railway line No. 8 Plovdiv –Stara Zagora–Yambol–Karnobat–Burgas. The two lines merge at

513-405: Is a cable factory of Japanese compaby Yazaki that produces electronic components for automotive industry. There are favourable conditions for agriculture, in particular orchards, vineyards and industrial crops. In the southernmost reaches of the valley, on the foothills the easternmost heights of Sredna Gora near the village of Kabile are the ruins of the ancient Thracian city of Cabyle, which

570-556: Is also its southernmost locality worldwide. There have been successful efforts in the reintroduction of two vulture species that went extinct from the mountain range in the past several decades. In 2021 the first cinereous vulture in Bulgaria in nearly 30 years hatched in Kotel mountains in the eastern section of the mountain range, thus establishing the second breeding colony in the Balkans, after

627-491: Is key for the protection of the eastern imperial eagle , saker falcon , Eurasian eagle-owl , Eurasian pygmy owl , Ural owl , boreal owl , white-backed woodpecker , semicollared flycatcher and the corn crake . The park's herpetofauna includes 15 reptile and nine amphibian species. It hosts vital populations of common European adder ( Vipera berus ), European toad , grass snake ( Natrix natrix ), legless lizard , tessellated water snake , viviparous lizard and

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684-760: Is only found within the park's boundaries, Аlchemilla аchtarowii , Alchemilla jumrukczalica , Betonica bulgarica , Centaurea davidovii , as well as another 75 Balkan endemics. The vertebrate fauna of Central Balkan National Park consists of over 300 species. The number of mammal species is around 60, including animals of high conservation concern, such as the: Balkan chamois ( R. rupicapra balcanica ), Eurasian brown bear , Eurasian otter , Eurasian wolf , European ground squirrel , European snow vole , European wild boar , European wildcat , Lesser mole-rat , Marbled polecat , Pine marten , Red deer , Red fox , Western roe deer . The avifauna includes some 220 species, of which 123 are resident/nesting. The park

741-519: Is served by six roads of the national network, as well as local roads. In the southernmost reaches passes a section of the Trakia motorway . From west to east from the village of Binkos to the river Mochuritsa it is traversed by a 69.4 km stretch of the first class I-6 road Gyueshevo – Sofia – Karlovo – Burgas . From north to south between the Petolachakata junction and the village of Mogila passes

798-539: Is the eighth largest city in Bulgaria. In Yambol Province there are one town and 14 villages. In Straldzha Municipality are located the town of Straldzha and the villages of Atolovo , Vodenichane , Dzhinot , Zimnitsa , Lozenets , Malenovo , Palauzovo and Charda . In Tundzha Municipality are situated Veselinovo , Drazhevo , Zavoy , Kabile , Mogila and Hadzhidimitrovo . In Burgas Province, Karnobat Municipality are located four villages — Venets , Devetak , Devetintsi and Tserkovski . The valley

855-623: The Balkan Province of Turkmenistan . In Antiquity and the Middle Ages the mountains were known by their Thracian name: the Haemus Mons . Scholars consider that the name Haemus (Αἷμος) is derived from a Thracian word *saimon , 'mountain ridge'. The name of the place where the range meets the Black Sea, Cape Emine , is derived from Aemon . A folk etymology holds that 'Haemus' derives from

912-515: The Balkans in Southeastern Europe . The range is conventionally taken to begin at the peak of Vrashka Chuka on the border between Bulgaria and Serbia . It then runs for about 560 kilometres (350 mi), first in a south-easterly direction along the border, then eastward across Bulgaria, forming a natural barrier between the northern and southern halves of the country, before finally reaching

969-586: The Black Sea at Cape Emine . The mountains reach their highest point with Botev Peak at 2,376 metres (7,795 ft). In much of the central and eastern sections, the summit forms the watershed between the drainage basins of the Black Sea and the Aegean . A prominent gap in the mountains is formed by the predominantly narrow Iskar Gorge , a few miles north of the Bulgarian capital, Sofia . The karst relief determines

1026-608: The Ottoman rule , many haiduks found refuge in the Balkan Mountains. Close to the highest summit, Botev Peak , is Kalofer , the birthplace of Hristo Botev , a Bulgarian poet and national hero who died in the western Balkan Mountains near Vratsa in 1876 in the struggle against the Ottoman Empire . Also close to Botev is Shipka Pass , the scene of the four battles in the Russo-Turkish War, 1877-78 , which ended Turkish rule in

1083-622: The Paleozoic to the Cenozoic eras. Limestone terrain is known for the short losing streams and tufaceous waterfalls. There are canyons and gorges, like those of the Toplodolska reka and Rosomačka reka rivers. The Rosomača canyon ( Rosomački lonci or Slavinjsko grlo ), with its 60 metres (200 ft) tall, cascade limestone walls, is known for its resemblance of the Colorado's Grand Canyon, but on

1140-491: The Roman period and late mediaeval monastic complexes. Some of those older monuments are fragmentary and relocated from their original locations. There are numerous examples of the ethnic edifices characteristic for the architecture of the region in the late 19th and early 20th century (houses, barns, etc.) Serbian section of the mountain is seen as a location for dozens of micro hydros , mini power plants which caused problem with

1197-444: The common frog . Due to the park's high altitude, the ichthyofauna consists of six fish species, with brown trout being the dominant one. Vrachanski Balkan Nature Park is situated in the western section of the mountain range and spans an area of 301.29 km . Its territory includes some of the most extensive karst areas in Bulgaria with over 600 caves, such as Ledenika , the gorge Vratsata whose 400 m vertical cliffs are

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1254-415: The golden eagle , long-legged buzzard , peregrine falcon , Eurasian eagle-owl, Alpine chough , Alpine swift , Eurasian crag martin , red-rumped swallow , wallcreeper , etc. There are 15 reptile and 11 amphibian species; of them important populations exist of the meadow lizard , European copper skink , Balkan crested newt , as well as the only habitat in Bulgaria of the northern crested newt , which

1311-430: The 1940s, in a number of localities along the Balkan Mountains. First group of trees was protected in 1966, followed by the creation of 7 special nature reserves and 3 natural monuments in the 1980s. Nature park Stara Planina was established in 1997 and since 2009 is in its present borders, covering an area of 1,143.22 km (441.40 sq mi). The protected area was expanded in 2020. The sediments extend from

1368-637: The 7th century by Bulgars who applied it to the area, as a part of the First Bulgarian Empire . In Bulgarian , the archaic word balkan (балкан) was borrowed from Turkic and means "mountain". It may have ultimately derived from the Persian bālkāneh or bālākhāna , meaning "high, above, or proud house." The name is still preserved in Central Asia with the Balkan Daglary (Balkan Mountains) and

1425-475: The Balkan Mountains at the following passes (listed from west to east): The Balkan Mountains have had a significant and special place in the history of Bulgaria since its founding in 681. It was a natural fortress of the Bulgarian Empire for centuries and formed an effective barrier to Moesia where most of the medieval capitals were located. The Balkan mountains were the site of numerous battles between

1482-461: The Balkans. Significant areas of the Balkan mountains are under protection by Bulgarian law, including one national park — Central Balkan National Park ; three nature parks — Vrachanski Balkan Nature Park , Bulgarka Nature Park and Sinite Kamani Nature Park, over 20 nature reserves, as well as numerous natural landmarks. Central Balkan National Park is among the largest and most valuable of

1539-594: The Biosphere Programme and for the world list of geoparks , while over tens of thousands of citizens signed petitions against the micro hydros and numerous protests have been organized by the local population. This prompted similar protests in other parts of Serbia and the association "Defend the rivers of Stara Planina" was founded, which expanded its base of operations outside of the Stara Planina region. The activism resulted in various physical altercation between

1596-654: The Bulgarian and Byzantine Empires including the Battle of the Rishki Pass (759), Battle of the Varbitsa Pass (811), the Battle of Tryavna (1190) and the Battle of Devina (1279). In the battle of the Varbitsa Pass, Khan Krum decisively defeated an enormous Byzantine army, killing Emperor Nikephoros I . For many centuries, the Byzantines feared these mountains, their armies reportedly retreating upon approaching them. During

1653-565: The Danube include the Timok , Archar , Lom , Tsibritsa , Ogosta , Skat , Vit , Osam , Yantra , and Rusenski Lom . The mountains are also the source of the Kamchiya , which flows directly into the Black Sea. Although not so abundant in mineral waters as other parts of Bulgaria, there are several spas such as Varshets , Shipkovo and Voneshta Voda. Developments in modern times have completely changed

1710-515: The Greek word "haima" ( αἵμα ) meaning 'blood', and is based on Greek mythology. During a fight between Zeus and the monster/titan Typhon , Zeus injured Typhon with thunder; and Typhon's blood fell on the mountains, which were then named for this battle. Other names used to refer to the mountains in different time periods include Aemon , Haemimons , Hem , Emus , the Slavonic Matorni gori and

1767-650: The Turkish Kocabalkan . The Balkan Mountains are, technically, a chain of fold mountains —mountains formed by the compression and breaking of layers of rock. On a geological time scale , they are a rather young and recently formed part of the Alp-Himalayan chain which stretches across most of Eurasia . The Balkan Mountains can be divided into two parts—the main Balkan Chain and the Pre-Balkans (Fore-Balkan) to

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1824-654: The bubbling and foaming. Montane ecosystems are diverse and include several plant communities: forests, shrubs, meadows, pastures and peatlands . There are six different vegetation zone in the park. Oak , beech , spruce , subalpine zone of the shrub vegetation of common horsetail , blueberry , subalpine spruce and mugo pine . Other plants include shrub alder , steppe pedunculate oak , but also rare and endangered species like European pasqueflower , yellow pheasant's eye , Kosovo peony , common sundew , Heldreich's maple , martagon lily , pygmy iris and marsh orchid . In total, there are 1,190 plant species, including

1881-423: The cinereous vultures were seen flying over the Serbian side, while the population decline of Egyptian vultures was slowed down. Neither griffon nor cinereous vultures are still nesting on Serbian side. The latter has not been nesting since the 1960s, when they were eradicated through the state operated campaign of poisoning wolves. Human heritage spans from the prehistoric remains, Classical antiquity including

1938-403: The city of Straldzha and 5,688 in the villages. It has a relatively high crude birth rate of 13,8‰ and a very high fertility rate of 3,01 children per woman, nearly two times higher than the national rate of 1,54 children per woman (at the end of 2016). The reason for this high fertility rate is the large concentration of ethnic Roma people in the municipality of Straldzha (nearly one-fifth of

1995-619: The environmentalists and local population. Even the Ministry for environmental protection halted some of the projects and litigated with the investors. They also announced the change of the Nature protection law, which will permanently forbid the construction of plants in protected areas. In order to prevent further degradation, the Nature Park Stara Planina was nominated for the UNESCO 's Man and

2052-414: The future, too. By the 2020s, Stara Planina became a popular filmmaking locality. With Serbian productions, the foreign movies were also filmed here, including the 2019 Indian action movie Uri: The Surgical Strike . Its director, Aditya Dhar , expressed surprise with "unremarkable similarity between Stara Planina and Kashmir ". The 2022 Australian Oscar entry You Won't Be Alone was also filmed on

2109-499: The geography of Serbia, especially when it comes to waterfalls. Still, there are a number of waterfalls to be seen, especially in the western and central parts of the range, such as Raysko Praskalo (the highest waterfall in the Balkans), as well as Borov Kamak , Babsko Praskalo , Etropole Waterfall , Karlovsko Praskalo , and Skaklya, among others. The area of the Stara Planina has always been sparsely populated and inaccessible because of

2166-638: The highest waterfall in the Balkans Raysko Praskalo (124.5 m). The rugged and diverse relief determines the presence of numerous gorges , cliffs , water features and caves, including Raychova Dupka, the second-deepest cave discovered in Bulgaria and in the mountain range, reaching depth of -377 m. The flora of Central Balkan National Park is diverse and consists of 1689 species of vascular plants , 45 species of algae and 238 species of mosses . These include 23 Bulgarian endemic species, such as leafy primrose ( Primula frondosa ), which

2223-739: The highest in the Balkans, and numerous waterfalls, such as Skaklia (141 m drop but unlike Raysko Praskalo it is seasonal) and Borov Kamak (63 m drop). The flora includes 1082 species of vascular plants and 186 species of mosses. The endemism is lowers when compared to the Central Balkan National Park ;— 6 Bulgarian and another 36 Balkan endemic species. The vertebrate fauna encompasses 276 species. The recorded mammal species are 58 and include gray wolf, golden jackal , wildcat, marbled polecat, European polecat , European pine marten and 22 bat species. The birds are 181 species, including 124 nesting ones. Typical species are

2280-574: The large number of caves, including Magura , featuring the most important and extended European post-Palaeolithic cave painting, Ledenika , Saeva dupka , Bacho Kiro , etc. The most notable rock formation are the Belogradchik Rocks in the west. There are several important protected areas: Central Balkan National Park , Vrachanski Balkan , Bulgarka and Sinite Kamani , as well as a number of nature reserves . The Balkan Mountains are remarkable for their flora and fauna. Edelweiss grows there in

2337-451: The local citizens on one, and contractors and their security guards on the other side, amidst the police interventions. In October 2018, Minister of Environmental Protection Goran Trivan , said that the current law allows for the micro hydros to be built in the protected areas. The government allowed the construction of 800 micro hydros, which has been described as "megalomaniacal" by the ecologists, as they would produce less than 1% of

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2394-417: The mountain are already transformed into the aromatic herbs plantations, especially the entire slopes of the nearby mountains being planted with lavender . In the 1980s, fossils of Thecodontosaurus were discovered on the mountain. It is one of the oldest recorded species of dinosaurs, and the remains are estimated to be some 250 million years old. Some 190 species of butterflies are recorded. The area

2451-533: The mountain. Straldzha Straldzha ( Bulgarian : Стралджа [ˈstraɫd͡ʒɐ] ) is a small town in Yambol Province , southeastern Bulgaria , situated in the Sliven Valley . It is the administrative centre of the homonymous Straldzha Municipality . As of 2022, the town had a population of 6,199. The municipality of Straldzha is home to 12,014 people at the end of 2016: 6,326 of whom live in

2508-582: The north, which extend slightly onto the Danubian Plain . To the south, the mountains border the Sub-Balkan valleys , a row of 11 valleys running from the Bulgarian-Serbian border east to the Black Sea , separating the Balkan Mountains from a chain of other ranges known as Srednogorie (which includes Vitosha and Sredna Gora ). The Balkan Mountains consist of around 30 distinct peaks; within Bulgaria,

2565-578: The one in north-eastern Greece. In recent years, several breeding pairs of griffon vulture have established themselves in the Vratsa Balkan to the west, as well as in the eastern sections of the Balkan Mountains. The eastern Balkan Mountains are among the priority areas in the reintroduction programme for the bearded vulture . Since the early XXI century there have been several records of the Eurasian lynx , which has been considered extincts in Bulgaria since

2622-497: The population belong to the Romani community, which is exceeding four times the national average). The small town is a hub for agriculture and wine production . Many residents however go to work and study in bigger cities, or abroad, in search of more opportunity. During the communist regime , Straldzha was a growing town with many factories and workers from the nearby villages. This Yambol Province , Bulgaria location article

2679-594: The protected areas in Europe. Since 2017, its ancient beech forests have been included in the Primeval Beech Forests UNESCO World Heritage Site . It is the third largest protected territory in Bulgaria, spanning an area of 716.69 km with total length of 85 km from the west to the east and an average width of 10 km. Within its territory are located the highest summit of the mountain range, Botev Peak (2376 m), as well as

2736-607: The range can be divided into three sections: In their central and eastern sections, the mountains form a water divide between the rivers flowing to the Danube in the north and those flowing to the Aegean Sea in the south. However, they are crossed by Bulgaria's longest river, the Iskar , which forms the Iskar Gorge . Rivers that take their source from the Balkan Mountains and flow northwards to

2793-1065: The region northern winds. The valley is drained by the river Tundzha of the Aegean Sea basin and several of its left tributaries, including the Asenovska reka, the Sotirska reka and the Mochuritsa . Administratively, the Sliven Valley falls in Burgas , Sliven and Yambol Provinces . There are one city, one town and 42 villages. In Sliven Province are located the city of Sliven and the villages of Blatets , Gavrailovo , Gergevets , Glufishevo , Glushnik , Gorno Aleksandrovo , Dragodanovo , Zhelyu Voyvoda , Zlati Voyvoda , Kaloyanovo , Kamen , Kovachite , Krushare , Malko Chochoveni , Mechkarevo , Panaretovtsi , Samoilovo , Selimovo , Sotirya , Strupets , Topolchane , Trapoklovo , Chintulovo and Chokoba . All of them are part of Sliven Municipality . Sliven

2850-493: The region of Kozyata stena . Some of the most striking landscapes are included in the Central Balkan National Park with steep cliffs, the highest waterfalls in the Balkans and lush vegetation. There are a number of important nature reserves such as Chuprene, Kozyata stena and others. Most of Europe 's large mammals inhabit the area including the brown bear , wolf , boar , chamois and deer . The mountains are

2907-432: The rivers streaming from the Balkan Mountains. The valley is a one-sided graben filled with Tertiary and Quaternary sediments with depth of 150 m to 500 m. There are mineral springs at Slivenski Mineralni Bani . The soils are mostly alluvial and cinnamon. The Sliven Valley is in the transitional zone between the temperate continental climatic zone and the continental Mediterranean zone , with typical for

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2964-685: The rugged and forested terrain, but also as a location of the Serbian-Bulgarian border. As armies relinquished the borders, giving control to the border police, civilians were allowed to explore the area. As a result, higher and higher waterfalls have been discovered on the Serbian side of the Stara Planina in the years since, including Čungulj (1996) at 43 m (141 ft); Pilj (2002) at 64 m (210 ft); Kopren (2011) at 103.5 m (340 ft); and Kaluđerski Skokovi (2012) at 232 m (761 ft). The mountains are crossed by 20 passes and two gorges. There are paved roads crossing

3021-407: The source of the name of the Balkans (sometimes considered as a distinct peninsula or region). In Bulgarian and Serbian the mountains are also known as Стара планина Stara planina (pronounced in Bulgarian as [ˈstarɐ pɫɐniˈna] and in Serbian as [stâːraː planǐna] ), a term whose literal meaning is 'old mountain'. It is believed the name was brought to the region in

3078-521: The station of Zimnitsa. The valley's economic hub is the city of Sliven, which has longstanding industrial traditions. The first modern factory on the territory of Bulgaria was established there in 1834 by the industrialist Dobri Zhelyazkov , producing textiles. The importance of textiles in local industry has somewhat declined in the 21st century and machine building is the most important sector. Sliven produces metal cutting machines, turning machines, column drilling machines, woodworking machines, etc. There

3135-469: The total electricity. Environmentalists also accused the government of destroying the plant and animal life using the pretext of renewable energy . In September 2019, Pirot city administration announced it is removing from the spatial plan all 43 existing locations for the micro hydros on the protected area of Stara Planina. There are 15 locations remaining in the unprotected sector of the mountain, but city officials announced abolishing of these locations in

3192-400: Was among the largest and most important settlements in ancient Thrace . The foundations of the defensive walls, the agora, temples, churches, baths, barracks and public buildings have been excavated. In 1969 the site was declared an archaeological reserve and is one of the 100 Tourist Sites of Bulgaria . Balkan Mountains The Balkan mountain range is located in the eastern part of

3249-423: Was declared a European Important Bird Area . The griffon vulture disappeared from the region in the late 1940s. In 2017 a program for their reintroduction began within the scope of a wider European program. Among other things, the feeders will be placed along the vultures' migratory route. By 2023, there were regular sightings of griffon vultures, and, thanks to the efforts of Bulgarian and Spanish ornithologists,

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